f4d43f91b6423d0cb87701f05e95f7435a3db22d526e2a5e357f16d1524bf6f5

Analysis

max time kernel
149s
max time network
156s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-09-2024 22:22

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General

Target

2024-09-20_6545f1f9dde0067c8c64bf41e9292a30_cryptolocker.exe
Size

96KB
MD5

6545f1f9dde0067c8c64bf41e9292a30
SHA1

439714735dfb60b2d7f96d5d982a2934919b850a
SHA256

f4d43f91b6423d0cb87701f05e95f7435a3db22d526e2a5e357f16d1524bf6f5
SHA512

7f295d865dd0c569a3a54be559f59a5b255b28fe612314bd6be742c0e8ebf2e08ea89c4e268ec7b66afa8841e46855bac5a67cd9703be8e0cfd82a7c79d0337a
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviPFY:AnBdOOtEvwDpj6zo

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3012	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2692	2024-09-20_6545f1f9dde0067c8c64bf41e9292a30_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2692-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000b000000012257-11.dat	upx
behavioral1/memory/3012-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2692-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/3012-27-0x0000000000500000-0x000000000050F000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-20_6545f1f9dde0067c8c64bf41e9292a30_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 3012	2692	2024-09-20_6545f1f9dde0067c8c64bf41e9292a30_cryptolocker.exe	30
PID 2692 wrote to memory of 3012	2692	2024-09-20_6545f1f9dde0067c8c64bf41e9292a30_cryptolocker.exe	30
PID 2692 wrote to memory of 3012	2692	2024-09-20_6545f1f9dde0067c8c64bf41e9292a30_cryptolocker.exe	30
PID 2692 wrote to memory of 3012	2692	2024-09-20_6545f1f9dde0067c8c64bf41e9292a30_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-20_6545f1f9dde0067c8c64bf41e9292a30_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-20_6545f1f9dde0067c8c64bf41e9292a30_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
96KB

MD5
76401aeb766df9ac300ada2375efd0d6

SHA1
24e72488eb456429fae0531a6270bf4e496e157a

SHA256
169183811de3f7987355ebd1af9673d487051747e872adb9e218443b82874920

SHA512
9992bcaaf14f98b7fc88070a7c879c4dd486235e653d04db812019f84fcbacf7f5e98bb8183af9b8c9eb5e6584787be2d04cc71e60ccd589245d90a281f231e5

Download Submit
memory/2692-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2692-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2692-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2692-9-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2692-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3012-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3012-26-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/3012-19-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/3012-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download